Your Flight
We analysed more than 11,000 data points along your route from Toronto Lester B. Pearson International Airport, Toronto to Lisbon Humberto Delgado Airport, Lisbon.
Air Transat
YYZ
LIS
TS9480
Air Transat · Live forecast
YYZ
→
LIS
83
Calm Score
"A smooth ride ahead — sit back and enjoy."
7h 15m
Duration
3,100 nm
Distance
39,000 ft
Cruise Altitude
HIGH
Confidence
Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth
Light
Moderate
Severe
Set an alert before your flight
Beta
You still have 16 hours before departure. We'll notify you if this forecast changes.
We know turbulence can feel scary — especially on long flights.
This report is built for you: what bumps feel like, when they happen, and why you'll be completely safe. 1 in 3 passengers feel exactly like you.
Right now on your route
Live pilot reports from aircraft flying YYZ → LIS
15 pilot reports along this route
15 / 15
Reporting smooth
0 / 15
Light turbulence
0
Moderate or worse
Latest pilot reports
Smooth
ARP AFR097 4625N04424W 0716 F410 4800N04000W 0739 4930N03000W MS55 226/50 KT FHTYP QXT AME 170716 J50A
4m ago
Smooth
ARP THY4YT 4800N04539W 0716 F390 4900N04000W 0742 5000N03000W MS51 225/78 KT TCLGL QXS YYT 170716 J25A
4m ago
Smooth
ARP LVL269B 4536N03544W 0716 F380 4530N03000W 0747 4430N02000W MS54 331/38 KT ECNRG DDL XXN 170716 J87A
4m ago
Smooth
ARP VIR22Q 4838N05135W 0713 F390 4900N05000W 0721 5100N04000W MS47 225/73 KT GVEYR DDL YYT 170714 J08A
7m ago
Smooth
ARP BAW224U 4640N05139W 0711 F390 4700N05000W 0718 5000N04000W MS47 349/96 KT GZBLD DDL YYT 170711 L30A
9m ago
AI-powered flight briefing
11,000 data points analyzed
· HIGH confidence
Your Journey Beta
3 hours 20 minutes and 3 hours 30 minutes into the flight: Some moderate bumps expected.
The crew may adjust altitude or ask you to stay seated during these sections.
The rest of the flight should be smooth.
Your route takes you over the Appalachian Mountains and crossing the North Atlantic Ocean – these areas can sometimes cause light turbulence.
Smooth Flight
We're expecting smooth conditions throughout your flight. You can sit back and relax.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 48 knots. These winds are favorable and may get you there up to 24 minutes early.
Landing
Landing should feel smooth with possible light bumps with typical approach conditions.
You're in Safe Hands
If you feel nervous at any point, remember that turbulence is expected, safe, and part of normal flying. The crew is monitoring everything, and the aircraft is built to handle far more than anything you will feel. Have a safe and calm flight.
Relaxation Exercises
ZeroTurb Index (ZTI): Powered by our turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity. Learn more
Flight Timeline 7h 15min
Maximum turbulence expected per segment
Takeoff
Light
0:30-0:59
Light
0:59-1:28
Light
1:28-1:57
Light
1:57-2:26
Light
2:26-2:55
Light
2:55-3:24
Moderate
3:24-3:53
Moderate
3:53-4:22
Light
4:22-4:51
Light
4:51-5:20
Light
5:20-5:49
Light
5:49-6:17
Light
6:17-6:45
Light
Landing
Light
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Airport conditions
Live weather at departure and arrival
YYZ
Toronto Lester B. Pearson International Airport — Departure
Visibility
6 mi
Wind
8 kt (150°)
Sky
Few
Temperature
21°C
Conditions
VFR — Clear conditions, no delays expected
LIS
Lisbon Humberto Delgado Airport — Arrival
Wind
2 kt
Sky
Scattered
Temperature
19°C
Conditions
VFR — Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Evening Flight Departure
Time of day
Evening Flight
Tip
Evening and night flights typically offer smoother conditions as thermal activity subsides and the atmosphere stabilizes after sunset.
When
Tomorrow — conditions may change
a21n
Category
Narrow-Body Aircraft
Size
Medium
Comfort
Single-aisle mainline jets like this offer a comfortable ride. While you may feel turbulence more than on wide-body aircraft, they are engineered to handle it smoothly.
Data sources & our approach
ZeroTurb's Custom Algorithm: Our proprietary
ZeroTurb Index (ZTI) combines three meteorological indices weighted by their
predictive accuracy — giving you transparent, passenger-focused turbulence probability instead
of vague categories.
This forecast integrates data from:
- ECMWF Open Data — Global atmospheric model (wind/temperature at 13 flight levels)
- NOAA Aviation Weather Center — Pilot Reports (PIREPs), SIGMETs/AIRMETs, TAFs
- NOAA Space Weather Prediction Center — Aurora forecasts for polar routes
- AviationStack API — Flight schedules and airline operational data
Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.